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Finding the Fourth Proportional to 683,137.80, 1,024,706.70 and 328,066.20

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Solution

The fourth proportional to 683,137.80, 1,024,706.70 and 328,066.20 is: 492,099.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,137.80 : 1,024,706.70 = 328,066.20 : x
  2. Step 2: Convert to fraction form
    683,137.80/1,024,706.70 = 328,066.20/x
  3. Step 3: Cross multiply
    683,137.80x = 1,024,706.70 × 328,066.20
  4. Step 4: Simplify right side
    683,137.80x = 336,171,633,183.54
  5. Step 5: Solve for x
    x = 336,171,633,183.54/683,137.80
  6. Step 6: Final answer
    x = 492,099.30

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.